On Mon, 9 Feb 2004, [ISO-8859-1] Thomas Börkel wrote:
> As I wrote in another thread: I have a still example, I think, for that
> problem: http://www.boerkel.de/q.zip
Initially, to me, that just looks like a variation on the grey
blocks/splotches that always seem appear during dark scenes. I wonder
if a bit of medianfiltering, perhaps on the chroma only, would reduce
the visibility of the discoloration.
> Problem is in the upper left corner. Most noticable in the q3 picture.
What type of system (cpu) is being used? SSE, MMX, MMX-Extended, ???
If the problem disappears at higher -q values (or does not happen with
all source material) then my theory is that there is an overflow
condition in the internal arithmetic caused by specifying too low of
a -q value.
Of course that is making the assumption it's the same problem.
Then too it is possible it is similar but not the same thing.
Steven Schult
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